The package installs Microsoft fixes and enhancements for the Microsoft Windows 7 operating system" as well as providing other fixes and enhancements for supported notebook models. These fixes and enhancements are required to improve the performance of these notebook models.Includes the following fix from Microsoft Knowledge Base Article: KB975599 - FIX: Stop error when you put a computer that is running Windows 7 or Windows Server 2008 R2 to sleep or into hibernation" or when you restart the computer: 0x9F